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Nanotech Contact Lenses Enable Infrared Vision Without Power

Researchers in China have developed soft contact lenses that convert infrared light into visible light, allowing users to see in the dark and through closed eyelids.

Studienteilnehmer setzt Infrarot-Kontaktlinse ein. © Yuqian Ma, Yunuo Chen, Hang Zhao
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Overview

  • The lenses use gold-doped nanoparticles embedded in a flexible polymer to convert near-infrared light into visible wavelengths.
  • Human trials demonstrated the ability to detect infrared light sources, decipher Morse-like signals, and enhance sensitivity with closed eyelids.
  • Mouse experiments confirmed infrared vision through pupil constriction and visual cortex activity under infrared illumination.
  • A second-generation lens incorporates color-coded wavelength translation, showing potential for aiding colorblind individuals and specialized applications.
  • Future improvements aim to enhance sensitivity to low-intensity infrared sources, such as thermal radiation, and increase spatial resolution.